{"product_id":"gr639-leg-curl-extension","title":"BodyKore GR639 Leg Curl\/Extension","description":"\u003ch2 class=\"h2title\"\u003eBodyKore GR639 Leg Curl\/Extension\u003c\/h2\u003e\n\u003cdiv class=\"one-half-column-left\"\u003e\n\u003cp\u003eThe BodyKore GR639 Leg Curl\/Extension trains both primary muscle groups of the knee joint — the quadriceps (leg extension) and the hamstrings (leg curl) — from a single seated station. The machine transitions between extension and flexion resistance through a pad-position adjustment that repositions the roller arm, eliminating the need for two separate machines to cover full knee joint training. The selectorized stack and hydraulic seat adjustment make it accessible to the full range of user sizes and strength levels.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDimensions: 50\"×68\"×65\"\u003c\/li\u003e\n\u003cli\u003eMachine weight: 362 lbs (frame)\u003c\/li\u003e\n\u003cli\u003eResistance: 220 lbs stack (upgradeable to 340 lbs)\u003c\/li\u003e\n\u003cli\u003ePrimary muscles: Quadriceps, Hamstrings\u003c\/li\u003e\n\u003cli\u003e220 lb precision-cut selectorized weight stack — upgradeable to 340 lbs\u003c\/li\u003e\n\u003cli\u003eHydraulic lift seat adjustment — fits any user instantly without tools\u003c\/li\u003e\n\u003cli\u003eWater-resistant, impact-resistant vinyl upholstery over high-density foam\u003c\/li\u003e\n\u003cli\u003eLB Guide Rod System for smooth, low-friction weight stack travel\u003c\/li\u003e\n\u003cli\u003eUrethane composite grips reduce contact-point stress and improve grip reliability\u003c\/li\u003e\n\u003cli\u003eEnclosed weight stack shields for safety without compromising aesthetics\u003c\/li\u003e\n\u003cli\u003eBuilt-in exercise instruction diagram for all experience levels\u003c\/li\u003e\n\u003cli\u003eWater bottle and personal items storage integrated into the machine\u003c\/li\u003e\n\u003cli\u003eWarranty: Frame: Lifetime | Weight Stacks \u0026amp; Pulleys: 10 Years | Upholstery\/Cables\/Springs\/Grips: 1 Year | Accessories: 6 Months\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePart of the BodyKore Isolation Series — precision-built with hydraulic lift seat adjustment, urethane composite grips, enclosed weight stack shields, water-resistant upholstery, and a built-in exercise diagram. Weight stack is 220 lbs standard, upgradeable to 340 lbs. Frame: lifetime warranty; Weight stacks \u0026amp; pulleys: 10 years.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"one-half-column-right\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0044\/9341\/0393\/files\/legcurl.jpg?v=1780343605\" alt=\"BodyKore GR639 Leg Curl\/Extension\"\u003e\n\u003c\/div\u003e\n\u003cbr style=\"clear: both;\"\u003e","brand":"BodyKore","offers":[{"title":"Silver Frame","offer_id":48928662094075,"sku":"GR639-S","price":3799.0,"currency_code":"USD","in_stock":true},{"title":"Black Frame","offer_id":48928662126843,"sku":"GR639-B","price":3799.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0044\/9341\/0393\/files\/legcurl.jpg?v=1780343605","url":"https:\/\/www.recoveryforathletes.com\/products\/gr639-leg-curl-extension","provider":"Recovery For Athletes","version":"1.0","type":"link"}